Leaf blades very narrow, linear, 1.5-5 mm wide, typically over 15 times longer than wide, not fleshy. Inflorescences often glandular-pubescent. Flowers: calyx green, not strongly inflated, (3-)5-8(-10) mm diam. at anthesis, often glandular-pubescent; petal limb 1-5 mm wide, with lateral teeth on each side.

Flowering summer. Rocky crevices, cliff ledges; 0-100 m; Oreg., Wash.

Variety rupinae is found along the Columbia River gorge.